单项选择题

When discharging oil from an oil tanker the instantaneous rate（）60 liters per nautical mile.

A.Should not exceed
B.Must be up to
C.Should exceed
D.Should be about

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单项选择题

When discharging an oil cargo，the first consideration is to（）.

A.get the bow up
B.discharge from the wings first
C.discharge from the centerline tanks first
D.discharge from amidships first

单项选择题

What is/are the advantage（s）of cranes over conventional cargo booms（）.

A.Cranes are able to pick up and drop loads over a greater spotting area
B.Increased safety because the deck is clear of running and standing rigging
C.Simplicity of operation of the crane by its operator
D.All of the above

单项选择题

What is the purpose of the equalizing beam aboard a crane vessel（）.

A.It allows for rotation of the hook in the single mode
B.It is required to“twin-up”30-ton pedestal cranes
C.It is used to pick up light loads
D.It is used to rigidly connect two cranes